Excellent Gas Sensing of CdS Nanowires Decorated with Ag Nanoparticles

2019 ◽  
Vol 19 (11) ◽  
pp. 7083-7088 ◽  
Author(s):  
Nan Zhang ◽  
Xiaohui Ma ◽  
Shengping Ruan ◽  
Yanyang Yin ◽  
Chuannan Li ◽  
...  
Keyword(s):  
Relative Humidity ◽  
Ag Nanoparticles ◽  
Gas Sensing ◽  
Average Diameter ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Cds Nanowires ◽  
The Stability ◽  
Ethanol Sensing ◽  
The One

In this study, CdS nanowires (NWs)/Ag nanoparticle materials (CdS@Ag) with Schottky junction were synthesized by a simple process. The Ag nanoparticles with a diameter of 3–10 nm were uniformly scattered on the surface of CdS NWs with an average diameter of 30 nm. The gas sensing properties and the effect of Ag content and relative humidity on the ethanol sensing properties of CdS NWs were investigated in detail. When the relative humidity was below 60% RH, the sensor, especially the one based on [email protected], exhibited an enhanced ethanol sensing response and selectivity compared with that of pristine CdS NWs, which was believed that Ag catalyzed the reaction between ionized oxygen species and ethanol. However, excessive Ag content does not mean a higher response and even decreased the response. Also, the stability of CdS NWs and CdS@Ag NWs was also investigated, which were almost stable for four months.

Synthesis and enhanced gas sensing properties of Au-nanoparticle decorated CdS nanowires

RSC Advances ◽  
2016 ◽  
Vol 6 (75) ◽  
pp. 70907-70912 ◽  
Author(s):  
Xiaohui Ma ◽  
Sijia guo ◽  
Jingli Shen ◽  
Yu Chen ◽  
Chuan Chen ◽  
...  
Keyword(s):  
Au Nanoparticles ◽  
Gas Sensing ◽  
Solvothermal Method ◽  
Average Diameter ◽  
Deposition Process ◽  
Au Nanoparticle ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Cds Nanowires

CdS nanowires (NWs) with an average diameter of 30 nm were synthesized by a solvothermal method and then Au nanoparticles with a size of 10–25 nm were decorated on the surface of the as-synthesized CdS NWs through a simple deposition process.

scholarly journals Structural, Electrical, and Ethanol-Sensing Properties ofLa1-xNdxFeO3Nanoparticles

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Nguyen Thi Thuy ◽  
Dang Le Minh ◽  
Ho Truong Giang ◽  
Nguyen Ngoc Toan
Keyword(s):  
Gas Sensing ◽  
Perovskite Phase ◽  
Sol Gel ◽  
Gel Method ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Crystallite Sizes ◽  
Orthorhombic Perovskite ◽  
Ethanol Sensing ◽  
20 Nm

The nanocrystallineLa1-xNdxFeO3(0≤x ≤1.0) powders with orthorhombic perovskite phase were prepared by sol-gel method. The average crystallite sizes ofLa1-xNdxFeO3powders are about 20 nm. The resistance and gas-sensing properties of theLa1-xNdxFeO3based sensors were investigated in the temperature range from 160 to 300°C. The results demonstrated that the resistance and response of the perovskite thick films changed with the increase of Nd content.

Flower-like In2O3 hierarchical nanostructures: synthesis, characterization, and gas sensing properties

RSC Advances ◽  
2014 ◽  
Vol 4 (91) ◽  
pp. 50241-50248 ◽  
Author(s):  
Dan Han ◽  
Peng Song ◽  
Huihui Zhang ◽  
Huihui Yan ◽  
Qi Xu ◽  
...  
Keyword(s):  
Hydrothermal Method ◽  
Gas Sensing ◽  
Hierarchical Nanostructures ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
One Step ◽  
Ethanol Sensing ◽  
Sensing Performance

Flower-like In2O3 nanostructures with superior ethanol sensing performance were synthesized by annealing In(OH)3 precursor prepared via a one-step hydrothermal method.

Investigation of Gas Sensing Materials SnO2/In2O3 Composite Nanofibers Treated by Oxygen Plasma

2013 ◽  
Vol 543 ◽  
pp. 180-183
Author(s):  
Hai Ying Du ◽  
Jing Wang ◽  
Peng Jun Yao ◽  
Lin Zhao ◽  
Zhe Nan Tang
Keyword(s):  
Gas Sensor ◽  
Oxygen Plasma ◽  
Composite Nanofibers ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Morphology And Structure ◽  
Before And After ◽  
The One ◽  
Large Response

SnO2/In2O3 composite nanofibers were synthesized by using an electrospinning system with double jets, then, treated by oxygen plasma. The morphology and structure of treated composite nanofibers were analyzed by SEM and XRD. The treated composite nanofibers showed more irregular and rough. The porosity of the treated composite nanofibers was bigger than the one of untreated. The gas sensing properties of the composite nanofibers to formaldehyde were measured before and after materials treated by oxygen plasma. The treated composite nanofibers exhibit large response values. Cross-responses and humidity effection of the treated composite nanofibers sensor were tested. The sensing mechanism of the SnO2/In2O3 composite nanofibers gas sensor treated by oxygen plasma was briefly analyzed.

Room temperature ethanol gas-sensing properties based on Ag-doped MoSe2 nanoflowers: experimental and DFT investigation

2021 ◽  
Author(s):  
Tingting Li ◽  
Sujing Yu ◽  
Qi Li ◽  
Minghe Chi ◽  
Peng Li
Keyword(s):  
Hydrothermal Method ◽  
High Purity ◽  
Room Temperature ◽  
Gas Sensing ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Ethanol Sensing

An Ag-doped MoSe2 nanomaterial-based sensor was fabricated for ppb-level ethanol sensing at room temperature. The MoSe2 and Ag-modified MoSe2 nano-flowers were synthesized by a hydrothermal method, which exhibited high purity...

scholarly journals Effect of Silver Addition on the Ethanol-Sensing Properties of Indium Oxide Nanoparticle Layers: Optical Absorption Study

2007 ◽  
Vol 2007 ◽  
pp. 1-5 ◽  
Author(s):  
Vidya Nand Singh ◽  
Bodh Raj Mehta ◽  
Rakesh Kumar Joshi ◽  
Frank Einar Kruis
Keyword(s):  
Optical Absorption ◽  
Gas Sensing ◽  
Dip Coating ◽  
Optical Absorption Study ◽  
Step Method ◽  
Silver Addition ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Oxide Nanoparticle ◽  
Ethanol Sensing

In2O3andIn2O3:Ag nanoparticle layers have been deposited using a two-step method consisting of chemical capping and dip coating techniques. The result of optical absorption analysis ofIn2O3:Ag samples shows the presence ofAg2Oand Ag in air-annealed and vacuum-annealed samples, respectively. These results have been correlated with the gas sensing properties of these layers towards ethanol and support the proposed mechanism that increase in sensor response on Ag addition is due to the conversion ofAg2Oto Ag in the presence of ethanol.

Ag Nanoparticle Functionalized TiO2 Nanowire Thin Film and its Gas-Sensing Application at Room Temperature

2013 ◽  
Vol 275-277 ◽  
pp. 1822-1825
Author(s):  
Huan Di Huang ◽  
Hui Juan Zhu ◽  
Liang Shu Jiang ◽  
Huan Yu Zhao
Keyword(s):  
Thin Film ◽  
Ag Nanoparticles ◽  
Room Temperature ◽  
Distribution Density ◽  
Gas Sensing ◽  
Ag Nanoparticle ◽  
Sensing Properties ◽  
Tio2 Nanowire ◽  
Gas Sensing Properties ◽  
Sensing Application

Ag nanoparticle functionalized TiO2nanowire (TiO2NW @ Ag NP) was synthesized and the gas sensing properties of the nanowire film was investigated. The size and the distribution density of Ag nanoparticles can be easily controlled. The sensor based on Ag nanoparticle functionalized TiO2 nanowire thin film has promising sensing properties, and at room temperature, its sensitivity towards H2and O2can reach 500 ppm and 1000 ppm respectively.

The CO gas sensing properties of direct-patternable SnO2 films containing graphene or Ag nanoparticles

2015 ◽  
Vol 39 (3) ◽  
pp. 2256-2260 ◽  
Author(s):  
Hyuncheol Kim ◽  
Chang-Sun Park ◽  
Kyung-Mun Kang ◽  
Min-Hee Hong ◽  
Yong-June Choi ◽  
...  
Keyword(s):  
Thin Films ◽  
Ag Nanoparticles ◽  
Gas Sensing ◽  
Composite Thin Films ◽  
Sensing Properties ◽  
Gas Sensing Properties ◽  
Co Gas

The CO gas sensing properties of direct-patternable SnO2 composite thin films were more effectively improved by the incorporation of Ag nanoparticles than graphene.

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